n-[2-(4-methoxyphenyl)ethyl]-2-methylpyrazolo[1,5-a]quinazolin-5-amine CAS 874009-94-6

Description

This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

CATO supplies n-[2-(4-methoxyphenyl)ethyl]-2-methylpyrazolo[1,5-a]quinazolin-5-amine (CAS 874009-94-6), a certified reference material (molecular formula C20H20N4O, MW 332.40 g/mol) for analytical method development and quality control.

The molecular framework of n-[2-(4-methoxyphenyl)ethyl]-2-methylpyrazolo[1,5-a]quinazolin-5-amine (C20H20N4O) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

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